Microarrays have made it straightforward to monitor simultaneously the expression pattern of thousands of genes. Thus, a lot of data is being generated and the challenge now is o discover how to extract useful information from them. Microarray data is highly specialized, involves several variables in a non-linear and temporal way, demanding nonlinear recurrent free models, which are complex to formulate and to analyze. Markov Chains are easily visualized in the form of graphs of states, showing the influences among the gene expression levels and their changes in time. In this work, it is proposed a new approach to microarray data analysis by extracting a Markov Chain. Important aspects to be analyzed are the time evolution of the genic expression and their mutual influence in the form of regulatory networks.
|